RETIREMENT AND BENEFIT PLANS (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		12 Months Ended
	May 03, 2015	May 04, 2014	Jan. 31, 2016
Pension Plans, Defined Benefit [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Number of Noncontributory Defined Benefit Pension Plans	5
Service cost, including plan expenses	$ 7.1	$ 5.0
Interest cost	7.1	7.1
Expected return on plan assets	(10.8)	(10.9)
Amortization of prior service cost (credit)	0	0
Total	3.4	1.2
Pension Contributions			1.4
Vesting Period Non-Contributory Defined Benefit Pension Plans	5 years
SERP Plans [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Number of Noncontributory Defined Benefit Pension Plans	3
Plan Benefit Payment Activation Age	65
Plan Benefit Payment Period	10 years
Minimum Number of Years of Employment	10 years
Minimum Age Prior to Employment Termination	55
Service cost, including plan expenses	1.3	1.1
Interest cost	0.9	0.9
Expected return on plan assets	0	0
Amortization of prior service cost (credit)	0	0
Total	2.2	2.0
Other Postretirement Benefit Plans, Defined Benefit [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Number of Noncontributory Defined Benefit Pension Plans	2
Minimum Number of Years of Employment	10 years
Minimum Age Prior to Employment Termination	55
Service cost, including plan expenses	0	0
Interest cost	0.2	0.2
Expected return on plan assets	0	0
Amortization of prior service cost (credit)	(0.1)	(0.2)
Total	$ 0.1	$ 0